scholarly journals Investigating the Effects of Core Spun Yarns on the Quick-Dry Property of Towels

2018 ◽  
Vol 26 (3(129)) ◽  
pp. 46-51
Author(s):  
Sait Yılönü ◽  
Belkıs Zervent Ünal
Keyword(s):  
Raw Materials ◽  
Water Absorbency ◽  
Ring Spinning ◽  
Basic Properties ◽  
Weft Direction ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Core Yarn

The purpose of this study was to investigate the effects of core-spun yarn on the quick-dry property of towels. This study focused on five different raw materials (modal, cotton, polyester, bamboo, viscose) which are the most frequently used in towel production. Seven different core yarns and five different conventional yarns were produced with these fibres on a ring spinning machine. These yarns were used in the weft direction of the towels. Samples produced with the same ground and pile warp yarns were subjected to constant dyeing conditions. All samples were tested for strength, softness, hydrophilicity and quick drying. As a result, polyester core yarn on the towels did not negatively affect basic properties such as water absorbency, softness and strength. However, the usage of polyester core yarns provided better quick dry properties than that of conventional yarns.

Comparison of Filament-Core Spun Yarns Produced by New and Conventional Methods

1992 ◽  
Vol 62 (2) ◽  
pp. 67-73 ◽  
Author(s):  
A. P. S. Sawhney ◽  
G. F. Ruppenicker ◽  
L. B. Kimmel ◽  
K. Q. Robert
Keyword(s):  
Cross Sections ◽  
High Strength ◽  
Improved Method ◽  
Ring Spinning ◽  
Paper Briefly ◽  
Cover Factor ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Core Yarn ◽  
Sewing Threads

In recent years, we have been reporting our research on composite yarns of mostly cotton content produced on a modified ring spinning system. Recently, we reported an improved method of producing an all staple-core spun yarn, and we have applied the same method to filament-core spinning, obtaining a yarn of greatly improved quality. The new filament-core yarn has almost total core coverage, does not strip, and is about 10% stronger (probably due to its improved yarn structure) than a conventional filament-core yarn. This paper briefly describes the new and conventional core spinning methods and evaluates nylon filament-core/cotton-wrap yarns produced with them. There is also a comparison of the cover factor, strip resistance, and microscopic cross sections of a few other core yarns (with Kevlar, fiberglass, and polyester cores). A significant improvement in the cover factor of the new yarn suggests that it may be very useful for sewing threads; ropes; twines; cables; special military, industrial, and surgical fabrics; and other textiles in which the high strength, durability, and a 100% cotton surface (for ease of finishing or coating) are important.

A Study on Physical Properties of Microfilament Composite Yarns

2016 ◽  
Vol 11 (3) ◽  
pp. 155892501601100 ◽  
Author(s):  
Esin Sarioğlu ◽  
Osman Babaarslan
Keyword(s):  
Tensile Properties ◽  
Textile Industry ◽  
Ring Spinning ◽  
Twist Factor ◽  
Statistical Effect ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Yarn Count ◽  
Ring Spun Yarn ◽  
Sheath Material

In the textile industry, composite yarns with multifilament cores are used to impart strength. There are various spinning systems to produce composite core-spun yarns. In this study, to determine the effects of filament fineness on yarn characteristics of composite yarns, polyester filaments with medium, fine and micro fiber linear densities were used as the core portion and cotton fiber was used as the sheath material. Yarn samples were manufactured using a modified ring spinning system with four different yarn counts and constant twist factor (ae). The effect of filament linear density on yarn tensile properties, unevenness and imperfections was determined. Yarn evenness and tensile properties were compared with 100% cotton ring spun yarn and to each other. When relative amount of core increases, it was observed that composite yarns had improved tenacity and elongation compared to 100% cotton ring spun yarn. Although filament fineness was found to have a significant effect on the CVm % properties, there was no statistical effect on imperfections other than yarn count parameter.

Air and Ring Combination in Tandem Spinning

1997 ◽  
Vol 67 (3) ◽  
pp. 217-223 ◽  
Author(s):  
A. P. S. Sawhney ◽  
L. B. Kimmel
Keyword(s):  
Spindle Speed ◽  
Optimum Level ◽  
Ring Spinning ◽  
Air Jet ◽  
Yarn Twist ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
Twist Level ◽  
Air Nozzle

With the objective of boosting ring spinning productivity, a new tandem spinning system combining air-jet and ring spinning technologies in continuous tandem is investigated. In this “air-plus-ring” tandem spinning system, a drafted roving strand as it emerges from the front roller nip feeds into a single- or dual-jet air nozzle where it is subjected to a vortex of compressed air, producing a pneumatically entangled, false-twisted, partially strengthened strand. This so-called prefabricated, air-bolstered strand continuously feeds into a standard ring spinning zone and is ultimately spun into a novel, single-component yarn. By spinning a few cotton and cotton-blend yarns with the lowest practical twist levels possible on both the tandem and conventional ring spinning systems, we show that a tandem spun yarn can be produced with a relatively lower (true ring) twist level than a pure ring spun yarn. To an extent, the tandem spinning's air-bolstering action reinforces the drafted fibrous strand, contributing to yarn formation and hence character. Since ring spinning productivity is inversely proportional to yarn twist level, the relatively lower twist level required in tandem spinning allows a proportionately higher yarn production speed (in some cases, up to 50% faster than the conventional ring spinning), while maintaining spindle speed at the traditional, optimum level imposed by the limiting traveler speed. Tandem spun yarns, however, are somewhat different from, and generally weaker than, conventional ring spun yarns. This paper briefly describes a prototype of the new tandem spinning system developed on a laboratory Spintester, and shows spinning parameters and properties of a few yarns produced on both the tandem arid conventional ring spinning systems, each employing the traditional (maximum) optimum spindle speed of 10,000 rpm for a given 5.0 cm (2 inch) diameter ring.

Study on properties of elastic core-spun yarns containing a mix of spandex and PET/PTT bi-component filament as core

2017 ◽  
Vol 88 (9) ◽  
pp. 1065-1076 ◽  
Author(s):  
Tao Hua ◽  
Ngo S Wong ◽  
Wai M Tang
Keyword(s):  
Draw Ratio ◽  
Linear Density ◽  
Test Results ◽  
Ring Spinning ◽  
Elastic Core ◽  
Spun Yarn ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Core Components ◽  
Yarn Hairiness

This paper presents a development of elastic core-spun yarn containing a mix of spandex and polyethylene terephthalate/polytrimethylene terephthalate (PET/PTT) bi-component filament as core to obtain better yarn properties, especially for elastic property. Eight types of core-spun yarns, consisting of different core components with various values of linear density and covered with cotton fibers, were produced using a modified ring-spinning machine with a core spinning attachment. The influences of core components, linear density, and draw ratio of spandex on yarn structure and properties were investigated. The experimental results demonstrate that core-spun yarns containing a mix of spandex and PET/PTT bi-component filament have much lower yarn stress decay as well as lower hairiness and CVm value of evenness compared to the yarns using only spandex. For the yarns containing a mix of spandex and PET/PTT bi-component filament, the yarns containing 70 denier spandex have higher elongation and stress decay compared to the yarns containing 40 denier spandex. The test results show that the elongation of yarns containing a mix of spandex and PET/PTT bi-component filament increases with the increase of the draw ratio of spandex. The stress decay of yarns containing a mix of 70 denier spandex and PET/PTT filament shows a similar trend to the elongation. Moreover, the yarn samples containing a mix of spandex and PET/PTT filament as core exhibit good yarn evenness, with very few thick places and neps, as well as low yarn hairiness.

scholarly journals Research on the Qualities of Cellulosic Yarn

2018 ◽  
Vol 26 (1(127)) ◽  
pp. 30-35
Author(s):  
Iwona Frydrych ◽  
Xuzhong Su ◽  
Xiaoxuan Qin ◽  
Xiaoxuan Qin ◽  
Xiaoxuan Qin ◽  
...  
Keyword(s):  
Cross Sections ◽  
Viscose Fibre ◽  
Breaking Strength ◽  
Ring Spinning ◽  
Textile Processing ◽  
Sampling Device ◽  
Spun Yarn ◽  
Fundamental Process ◽  
Spun Yarns ◽  
Compact Spinning

Cellulosic fibre is a kind of renewable fibre that has attracted more and more attention in textile processing recently. Yarn spinning is the first fundamental process in textile processing. Therefore, in this paper, taking viscose fibre and tencel fibre as examples, the qualities of cellulosic yarn were studied. Three kinds of pure viscose and tencel yarn: 14.6 tex (40S), 9.7 tex (60S) and 7.3 tex (80S), were spun on a ring spinning system modified with lattice apron compact spinning (LACS) and complete condensing spinning (CCS), respectively. The spun yarn qualities, yarn evenness, breaking strength and hairiness, were tested and comparatively analysed. Then two kinds of cellulosic blend yarn including 14.6 tex, 9.7 tex and 7.3 tex JC/R 60/40 yarn, and 14.6 tex, 9.7 tex and 7.3 tex JC/T 70/30 yarns were spun on a ring spinning system modified with CCS. The spun yarn evenness, breaking strength and hairiness were tested, and the cross sections of the spun yarns were presented using a Y172 Hardy’s thin cross-section sampling device. The results show that for both the pure viscose and tencel yarn, compared with LACS, CCS has better yarn evenness, a little lower yarn breaking strength and a little more hairiness, while the uniformity of yarn qualities are all improved. For the cellulosic blend yarn, compared with the pure cellulosic yarn, yarn evenness is worse, especially for the cotton and tencel blend yarn.

scholarly journals Determination of Optimum Twist Equation for the Long Staple Combed Cotton Ring-Spun Yarn

Fibers ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 59
Author(s):  
Dunja Šajn Gorjanc ◽  
Neža Sukič
Keyword(s):  
Ring Spinning ◽  
Elongation At Break ◽  
Yarn Strength ◽  
Yarn Twist ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
Yarn Hairiness ◽  
Spinning Mill

The aim of this research was to determine the optimum twist equation for ring-spun yarns. The yarn twist can be calculated by different equations. With the research, we tried to find the appropriate equation to determine the yarn twist, which is determined by the values of yarn strength and hairiness. In the research, yarns from long staple combed cotton rovings and of different fineness (10 tex, 11.8 tex, 20 tex and 29.4 tex) were analyzed. The yarn twist was calculated using the equations of Koechlin and Laetsch. The analyzed yarns were produced in the spinning mill on the laboratory ring spinning machine Spinntester. In the second part of the investigation, yarn strength and hairiness were analyzed as a function of yarn twist. The results showed that Laetsch’s equation is suitable for determining the twist for yarns with a fineness of 10 tex, 11.8 tex, 20 tex and 29.4 tex, since, in this case, the calculated number of yarn threads is higher and thus the strength and elongation at break are also higher. The yarn hairiness is higher in analyzed samples for yarns with the twist calculated according to the Koechlin’s equation.

Study on Alginate Fiber Core-Spun Yarn by Friction Spinning

2011 ◽  
Vol 332-334 ◽  
pp. 412-415 ◽  
Author(s):  
Jian Kun Wang ◽  
Xu Zhang ◽  
Ming Ming Xu
Keyword(s):  
Orthogonal Experiment ◽  
Ring Spinning ◽  
Roller Speed ◽  
Technical Parameters ◽  
Spun Yarn ◽  
Overall Performance ◽  
Core Yarn ◽  
Alginate Fibers ◽  
Alginate Fibres ◽  
Spinning Speed

Alginate fibres are difficult to spin on the traditional ring spinning machine. Friction core-spun yarn which took alginate fibers as main wrapped fibers and cotton yarn as core yarn were developed on DREF-Ⅲ. The influence of main spinning technical parameters, such as spinning speed, friction roller speed and core yarn percentage, on the yarn performances was studied by means of orthogonal experiment and the optimized technical was put forward. The results showed that the overall performance of the core-spun yarn would be better as spinning speed of 100 m/min, friction roller speed of 4000r/min, core yarn percentage of 50% respectively.

Effects of spinning process and core yarn contents on yarn shape retention

2019 ◽  
Vol 32 (4) ◽  
pp. 457-469
Author(s):  
Wei Yanhong ◽  
Xinjin Liu ◽  
Xuzhong Su ◽  
Zhao Zhimin
Keyword(s):  
Content Type ◽  
Yarn Strength ◽  
The Core ◽  
Yarn Twist ◽  
Twist Factor ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Spinning Process ◽  
Shape Retention ◽  
Core Yarn

Purpose In order to develop high shape retention yarn and investigate the effects of spinning process and core yarn contents on the shape retention of yarn, in this paper, three kinds of yarns, JC/T400 18.5tex (55.6dtex) core-spun yarn, JC/T400 18.5tex (44.4dtex) core-spun yarn and JC18.5tex pure cotton yarn were spun by using the complete condensing Siro-spinning technology. The paper aims to discuss these issues. Design/methodology/approach In this paper, the core-spun yarns were spun by using the complete condensing spinning and Siro-spinning technology. Two key spinning processes, yarn twist factor and core yarn pre-draft ratio, were optimized by using the orthogonal test method first. Then, via the variable control method, the position of the core yarn, the position of the bell mouth and the center distance between two bell mouths were optimized, respectively, and corresponding optimal spinning process of the three yarns was determined. Finally, the yarns were spun under the optimal process, and the performance of the spun yarns was tested and compared. Findings Results show that the yarn twist factor affects yarn strength and hairiness, the position of bell mouth affects the evenness and hairiness of the yarn mainly, and the position of the core yarn affects the coverage and hairiness of the yarn. For the Z-twist spinning, the core yarn enters the front roller from the left side of two strands center, which is beneficial to improve the covering effect of core yarn, and reduce the pilling phenomenon of the yarn. The contents of core yarn affect indicators of the yarn shape retention, such as yarn strength, elastic recovery and abrasion resistance. Originality/value The shape retention of yarns affects the shape retention of fabrics, and the production of yarn with high shape retention is a key step in achieving shape retention of fabrics. At present, there are little studies on the shape retention of yarns, most researchers shave focused on shape retention of fabrics. Using the complete condensing Siro-spinning method to spin the core-spun yarn can improve the quality of the yarn. Compared with traditional ring-spinning yarns, the addition of the core yarn can improve the shape retention of the yarn.

Preparation and fuzzy evaluation of wool hollow yarn

2019 ◽  
Vol 90 (9-10) ◽  
pp. 1149-1156
Author(s):  
Xu Yongfu ◽  
Yi Zhang ◽  
Gao Yuan yuan
Keyword(s):  
Linear Density ◽  
Water Soluble ◽  
Fuzzy Evaluation ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Hair Fiber ◽  
Core Yarn ◽  
Hollow Yarn ◽  
Pva Fiber ◽  
Temperature Water

Wool hollow yarn not only has the characteristics of being skin-friendly and warm, it also has good air and moisture permeability; thus, it has great development potential. Here, we first show that the water-soluble (polyvinyl alcohol (PVA)) fiber ratio in core-spun yarn should not exceed 30%; to ensure smooth spinning, a core yarn linear density of 3.4–5.6 tex was selected by theoretical analysis. Second, using rabbit hair fiber with tencel fiber, which has high tenacity, as an environmentally friendly blended outsourcing fiber, and water-soluble (PVA) fiber for the core yarn, we prepared five types of core-spun yarns. Water-soluble (PVA) fiber was removed in 20 min to prepare wool hollow yarn using room temperature water. Finally, properties of the wool hollow yarn produced, such as breaking strength, breaking elongation, evenness of CV (coefficient of variation) value, >3 mm hairiness index, and deviation from linear density after removing PVA, were tested and analyzed, and evaluated comprehensively by means of fuzzy mathematics. The results showed that the hairiness of wool hollow yarn was improved, the mechanical properties and evenness of sliver and hairiness were decreased, and the overall properties of hollow yarns with a core yarn content of 25% were the best.

Improved Method of Producing a Cotton Covered/Polyester Staple-Core Yarn on a Ring Spinning Frame

1992 ◽  
Vol 62 (1) ◽  
pp. 21-25 ◽  
Author(s):  
A. P. S. Sawhney ◽  
K. Q. Robert ◽  
G. F. Ruppenicker ◽  
L. B. Kimmel
Keyword(s):  
New Method ◽  
Cotton Yarn ◽  
Fibrous Materials ◽  
Improved Method ◽  
Ring Spinning ◽  
Axial Segregation ◽  
The Core ◽  
Spun Yarn ◽  
Core Yarn

A new, better method of producing cotton covered/polyester staple-core yarn on a modified ring spinning frame is described. The method uses the concept of twisting a “sandwich” formed by two drafted strands of cotton (rovings) on the outside and a drafted strand of polyester on the inside, thus using a total of three rovings. The earlier method used only one cotton roving and one polyester roving [10]. The new method is simple and easily adaptable to the existing spinning frames; piecing of broken ends is also easy. A 67/33 cotton/high tenacity polyester staple-core yarn produced by the new spinning system is evaluated. The core of the yarn is almost totally covered with a firm sheath of cotton, giving the an appearance of a 100% cotton spun yarn. Compared with conventional yarns of 100% cotton and 67/33 cotton/polyester intimate blends, the core yarn is significantly stronger than the equivalent 100% cotton yarn and the intimate blend yarn of regular tenacity polyester. These yarns may be useful where a co-axial segregation of different fibrous materials is important or critical. The new staple-core spinning technology can be applied to produce yarns from a variety of core and sheath materials, such as Kevlar, PBI, Nomex, cotton, and wool, among others.

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